Knee massager



FIG. 1 is a top, front, left, perspective view of the knee massager showing my new design;

FIG. 2 is a bottom, front, left, perspective view thereof;

FIG. 3 is a bottom, rear, right, perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the knee massager that form no part of the claimed design. 

CLAIM The ornamental design for a knee massager, as shown and described. 